A flow sensor is described, which uses the deflection of an elastic beam by fluid flow, to deform strain guages. The flow sensor has been calibrated using both conventional and optical strain gauges. By measurement of strain in two orthogonal directions, the sensor measures both the magnitude and direction of air velocity, by means of vectorial addition of the flow components in two orthogonal directions. The sensor is able to measure over a flow range of 0 to 30 m/s, with a sensitivity of 0.0050+-0.0002 units of optical strain s/m and 0.0062 +-0.0001 units of conventional resistive strain s/m and an optical resolution of 1.419 m/s and conventional strain gauge resolution of 0.64 m/s.
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机译：描述了一种流量传感器，其利用流体流对弹性梁的偏转来使应变仪变形。流量传感器已使用常规应变仪和光学应变仪进行了校准。通过测量两个正交方向上的应变，传感器通过矢量在两个正交方向上的相加来测量风速的大小和方向。该传感器能够在0到30 m / s的流量范围内进行测量，灵敏度为0.0050 + -0.0002单位光学应变s / m和0.0062 + -0.0001单位常规电阻应变s / m，且光学分辨率1.419 m / s的传统应变仪分辨率和0.64 m / s的常规应变仪分辨率。
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